Mountings of spindles in spinning or thread twisting machines



July 14, 1959 G. MEYER-BuscHE 2,894,365

MOUNTINGS OF SPINDLES IN SPINNING OR THREAD TWISTING MACHINES Filed June26, 1957 United States Patent MOUNTINGS OF SPINDLES IN SPINNING ORTHREAD TWISTING MACHINES Gert Meyer-Busche, Munich, Germany ApplicationJune 26, 1957, Serial No. 668,213

Claims priority, application Germany June 28, 1956 4 Claims. (Cl. 57-132This invention relates to mountings of spindles in spinning or threadtwisting machines, wherein said spindles are resiliently supportedrelative to the spindle rail.

Attempts have been made heretofore to support the mounting of spinningand twisting spindles flexibly against the spindle rail by means of cupsprings, specially formed springs or coil springs in order to damp oreliminate the transmission of vibrations to the spindle rail. Thehitherto known solutions are unsatisfactory because they do not allowsufficiently for positive or forced spindle centering and damping ofnatural and resonant vibrations, so that vabriations, disturbing theoperation and function of the machine, are transmitted and could not beavoided.

An attempt has also been made, by means of flexible, synthetic plasticlayers or glands, which press into the thread of the spindle bearinghousing, to secure the fastening nut on the underside of the spindlerail and hence the centering of the spindle mounting in the spindlerail. This solution is, however, complicated and expensive, because itnecessitates a counter-support in the form of a flange which is eithermade integral with the spindle bearing housing or must additionally beprovided.

The present invention overcomes the aforesaid and other drawbacks by asimplified and inexpensive supporting system for the spindle and has asone of its objects to provide means affording efficacious resilientsupport for the mountings of spinning and twisting spindles against thespindle rail, which support is particularly advantageous in operation,as well as in manipulation to bring about assembly and disassembly. Itis another important feature of the invention to provide means ensuringthe avoidance of formation and transmission of vibrations in the supportparts while an effective fastening or anchoring for the spindle mountingon the spindle rail is attained. It is a further object of the inventionto provide means conducive to a highly economical spindle mountingstructure which permits intense damping and very advantageously anaccurate spindle centering.

To this end, according to the invention, in spindle mountings of theabovementioned kind, a cup spring is employed, which on the one hand issupported so as to positively center same by means of a slotted collardisposed on the inside edge of said cup spring, relative to thecorresponding flange of the spindle mounting, and which is anchored, onthe other hand, relative to the spindle rail by means of an elasticallydeformable vibration-damping element, which, when the cup spring isloaded, presses into an intermediate space provided between the spindlemounting and the spindle rail and thus automatically ensures the spindlecentering in the spindle rail.

The provision according to the invention of a cup spring having aslotted collar at the inside edge in such a manner that said collarpresses lightly and resiliently by its inner surface, which may becurved, against a correspondingly rounded flange of the spindle hearingor 2,894,365 Patented July 14, 9

ice

spindle bearing housing, has the advantage that when the cup spring isloaded the inside edge of said cup spring contracts and thus exerts aresilient action against the flange of the spindle mounting inconsequence of the slotting and lever action in the collar, so that theloaded cup spring will be forced to be centered on said flange. By meansof a play-free and simultaneously axially and radially resilientsupport, vibrations and distortions between the spring system and thespindle mounting are avoided.

This arrangement furthermore allows with great advantage that thespindle mounting flange hitherto customary and made generally large inrespect to spinning technique and from the standpoint of production, canbe kept conveniently and economically small, for example in the form ofa split ring round in cross-section, and hence the vertical adjustmentof the spindle mounting will be greatly simplified.

Cup springs develop Very great spring forces in a small space and at thesame time have very favorable natural damping. This damping action isfurther increased in an advantageous manner according to the inventionby supporting the cup spring against the spindle rail on an elasticallydeformable damping element, for example, on a ring made of relativelysoft plastic composition, such as polyvinyl chloride. By suitablemodification of the elasticity of said ring or element and by outwardlybevelling its surface facing the cup spring, the cup spring tension anddamping action desired for the elastic fastening of the spindle mountingon the spindle rail are conformed to one another and at the same timethe extent to which the elastic element presses into the free space atthe spindle rail bore for centering the spindle and securing same inplace is readily established.

These and other objects of the invention will become further apparentfrom the following detailed description, reference being made to theaccompanying drawing showing a preferred embodiment of the invention.

In the drawing:

Fig. 1 is a horizontal section of a spindle mounting or housingsupported against the spindle rail by means of a cup spring shown inunloaded condition.

Fig. 2 is a section through the mounting assembly with the cup spring inloaded condition, the spindle bearing housing being shown in elevation.

Referring now more particularly to the attached drawing, there isdisclosed in Fig. 1 cup spring 1 supported by its collar 2, which has anumber of radial slots 3, on a split ring 4 which is anchored on thespindle bearing housing 5, the collar 2 being slightly crimped at itsupper edge and after being pushed or forced on resiliently engages frombelow over the split ring 4. The unloaded cup spring 1 as shown in Fig.1 rests only at its outer edge on the elastic ring or element 6, whichsupports the assembly relative to the spindle rail 7. The bore 8 in thespindle rail 7 is sufliciently large for centering purposes (in theexample shown, larger than the diameter of said split ring 4) andproduces an intermediate space or clearance between the spindle bearinghousing 5 and spindle rail 7.

Fig. 2 shows the parts of the aforesaid mounting assembly with the cupspring 1 in loaded state or condition in consequence of the tighteningof the nut 10 engaging the spindle housing 5 and bearing against rail 7.Fig. 2 especially shows how the cup spring 1, after attaining a desiredinitial tension, for example on reaching a substantially horizontalphase of its characteristic is pressed with its entire underside or faceon the elastic ring 6 and so deforms the latter that a central part ofits mass transforms to an enlarged rim or ring 9 and presses into theclearance or free space of the spindle rail bore 8 which is littlelarger than the spindle housing 5, and thereby secures the centering ofthe housing with its spindle (not shown).

Various changes and modifications may be made without departing from thespirit and scope of the present invention and it islintended that suchobvious changes and modifications be embraced by the annexed claims.

Having thus described the invention, What is claimed as new and desiredto be secured by Letters Patent is:

1. A mounting for a spindle for use in spinning and like machines havinga spindle rail with a bore; comprising a cup spring provided with aslotted collar, a spindle housing provided with an annular projectionadapted for engagement with and abutment by said collar, said housingextending through said bore of said spindle rail with predeterminedclearance, and an elastically deformable damping element located betweensaid cup spring and said spindle rail and provided with a central partadapted to be deformed into a rim pressed into said clearance providedbetween the spindle rail bore and the spindle housing to thereby securethe spindle when passing through said spindle housing in centeringrelation to said bore of said spindle rail.

2. A mounting according to claim 1, wherein said damping element is inthe form of a ring made of a composition of polyvinyl chloride, saidring being conical in cross-section and being adapted to form anabutspindle i ment against the spindle rail and to substantially tightlyembrace a corresponding part of said spindle housing.

3. A mounting according to claim 1, wherein said annular projection onsaid spindle housing forms a split ring having a diameter smaller thanthat of said bore, whereby said housing may be inserted in said bore forassembly purpose.

4. A mounting for a spindle for use in combination with a spindlerailhaving a bore, comprising a cup spring having a slotted collar, aspindle housing extending through said bore of said spindle rail withpredetermined clearance, a split ring on said spindle housing, saidcollar abutting and engaging said split ring, and an elasticallydeformable damping element of relatively soft plastic material locatedbetween said cup spring and said spindle rail and provided with acentral part adapted to be deformed into a rim pressed into saidclearance provided between the spindle rail bore and the spindle housingto thereby secure the spindle when passing through References Cited inthe file of this patent UNITED STATES PATENTS 2,497,865 Cochran Feb. 21,1950

